See LNER class J94 for details.
This locomotive was built in 1952 for the Ministry of Defence by the Hunslet Engine Company to the design used to supply to the Ministry of Defence and is thus regarded as an Austerity type locomotive.
It was delivered new to the Longmoor Military Railway in January 1953 and stored at Woolmer. It moved to Long Marston in Warwickshire in July 1955 but by February 1959 it was back in store at Bicester. By May 1961 it was in store at Long Marston again.
It was observed at Reading as part of a freight train in December 1967 when it was moved to the Royal Engineers at Shoeburyness.
In May 1971 tenders were invited for its purchase.
In June 1971 the locomotive went to the Colne Valley Railway in Essex.
By 1973 the locomotive was to be found on a plinth on a short piece of track on the trackbed of the old Colne Valley & Halstead Railway. This was the base of the Colne Valley Railway which at that stage was undeveloped.
It was back in operation again following a steam test in May 1983.
After being in service in the early 2000s the locomotive returned to traffic in September 2012 after undergoing an overhaul lasting five years.
It is currently operational on the Colne Valley Railway.